4 ms·
ImageMagick and GNU parallel happily max-out all cores on my machine and convert a few hundred images per second: find -type f -name '*.jp2' | parallel --x
by matja 4y ago
ImageMagick and GNU parallel happily max-out all cores on my machine and convert a few hundred images per second:
find -type f -name '*.jp2' | parallel --xargs --max-args=1 convert {} {.}.jpg
- prvc 4y agoWould be yet another lossy transcode, though.
- acomjean 4y agoYou could convert to png or tiff if you wanted lossless. Jpg at high quality is pretty good for general photo saving if you aren't doing tons of modifications after the fact. I think some editors now save the original and just store the modification steps (Lightroom does this for raw at least.)
- grumbel 4y agoUse JPEG XR, that has a lossless mode and better compression than you would get with .png. Though of course that puts you at risk of using yet another unproven format. Though it seems to be on track to become the JPEG successor from what I understand.